Messages in this thread | | | Date | Mon, 23 Sep 2002 14:28:21 -0700 (PDT) | Subject | Re: DAC960 in 2.5.38, with new changes | From | "David S. Miller" <> |
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From: David Mosberger <davidm@napali.hpl.hp.com> Date: Mon, 23 Sep 2002 14:33:46 -0700
>>>>> On Mon, 23 Sep 2002 23:31:13 +0200, Daniel Phillips <phillips@arcor.de> said:
Daniel> Why attempt to write 8 bytes on ia32 when only 4 are needed?
Even on ia32 you'll need 8 bytes if the controller is operated in DAC mode (which is what you want for a machine with >4GB of memory), no?
Right. But if we know the top 32-bits will always be zero (f.e. if CONFIG_HIGHMEM is disabled on x86) one might want to optimize this to avoid the first 32-bit store. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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